feat(branding): replace ASCII fox banner with embedded image

HellionChat/Branding/HellionForgeAscii.cs

@@ -1,25 +1,18 @@
 namespace HellionChat.Branding;
 
-// Lazy-loaded provenance art that ships embedded with the DLL. Two
-// variants:
+// Lazy-loaded ASCII art that ships embedded with the DLL.
 //
-//   - FoxBanner: the full-size silhouette with "Hellion Forge" inside
-//     the body — rendered in the first-run wizard and the Information
-//     tab as a small "about the makers" anchor.
 //   - FoxMini: the four-line fox-head + curly-tail that gets stitched
 //     into the DI-logger bootstrap line so an xllog reader sees the
 //     same signature on every plugin load.
 //
-// Both files live as embedded resources under HellionChat.Branding.* so
-// the plugin DLL is self-contained — no on-disk asset lookup that could
+// The file lives as an embedded resource under HellionChat.Branding.* so
+// the plugin DLL is self-contained; no on-disk asset lookup that could
 // silently miss after a partial deploy.
 internal static class HellionForgeAscii
 {
-    private static string? _foxBanner;
     private static string? _foxMini;
 
-    public static string FoxBanner => _foxBanner ??= Load("HellionChat.Branding.fox-banner.txt");
-
     public static string FoxMini => _foxMini ??= Load("HellionChat.Branding.fox-mini.txt");
 
     private static string Load(string resourceName)